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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 2517 | $value = preg_replace('/[^0-9:.-]/', '', $value); // strips slashes |
| 2518 | break; |
| 2519 | |
| 2520 | case 'siteurl': |
| 2521 | case 'home': |
| 2522 | $value = stripslashes($value); |
| 2523 | $value = esc_url($value); |
| 2524 | break; |
| 2525 | default : |
| 2526 | $value = apply_filters("sanitize_option_{$option}", $value, $option); |
| 2527 | break; |
| 2528 | } |
| 2529 | |
| 2530 | return $value; |
| 2531 | } |
| 2532 | |
| 2533 | /** |
| 2534 | * Parses a string into variables to be stored in an array. |
| 2535 | * |